Composition of matter and method of tempering same.



UNITED STATESE gENT oFFIoE.

MARTIN S. WOELFEL, OF SOUTH BEND, INDIANA, ASSIGNOR TO CHRISTOPHERFLUEGEL.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed June 29, 1907. Serial No. 381,546.

. .Sawdust 100 pounds. Water 12pounds. Gl cerin 1 pound.

Oi of vitriol 2 pounds.

The'oil of vitriol (sulfuric acid) and the water are first mixed andthen the sawdust added and thoroughly commingled, and then the glycerinis added. These ingredients thus prepared are to be thoroughly mingledby agitation and grinding unt1l the mass is of a consistency of thenature of soft modeling clay. The composition may then be molded intovarious articles of manufacture, or ornamentations for buildings,advertising signs having raised letters, and many other articles forwhich my composition is espeble fiber can be used, but sawdust isarticles are su jected to the bath for a longer period of time, thehardness being thus readily measured or controlled, as will be obvious.

The treatment of the alkali solution renders the articles brittle andcare should be taken not to unduly prolong the bath.

In the use of my composition any vegefta? re erable because of itscheapness, and of 1tsnature, the fibers thereof being easily separable.The saw-dust employed will preferably be non-resinous. The materials areemployed at their normal tern erature, and air may be employed to accompish the requisite drying, or the heat of the sun may be employedfor-this purpose.

I claim- I 1'. The method of producing a non-elastic body, whichconsists in first mixing water and oil of vitriol, then adding andthoroughly mixing a vegetable fiber to said ingredients, then addingglycerin, tlienmolding and drying the mixture, and subsequentlysubjecting the mixture to a bath to extract a certain percenta "e of theoil of vitriol from the product.

2. The method of preparing the herein described composition, whichconsists in first mixing water and oil of vitriol, then mixing andthoroughly agitating a vegetable fiber with the aforesaid ingredients,then adding glycerin, then moldin and drying the mixture, andsubsequentfy subjecting the mixture to a bath to extract a certainpercentage of one of the aforesaid ingredients.v

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MARTIN S. WOELFEL.

Witnesses GEORGE OLTSCH, G. M. COLE.

